Other thing, i have a hd4870 and this casrd in w7 x64, what drivers do i need to get physx working? I read that nvidia disable if detect a non Nvidia card on the system, e read some things abaout hibrid physx, do i need to have a Nvidea card or even if limited, i should get my ageia to work or simply get rid of it from my system.

Meanwhile, if you are not planning to use your PPU to play some old exclusive PhysX games (Switchball, Cellfactor, Stoked Rider, etc) I would suggest to get rid of it for sure.Hybrid PhysX is far more effective.

It seems the fans breaking down is a fairly common problem, luckily the fans themselves are fairly inexpensive. Just look for 45mm 2pin fans on ebay or your favorite shopping site. Going price varies between $2 - $10.

Yeah, I recently gave my friend who is running an AMD system my old physx card so he could run a few of his games with physx pretty easily(Arkham Asylum, Mirror's Edge, UT3), but the fan started squeaking really bad. So he replaced the fan and it was actually really easy.